Density Gradients News Today

You basically have no light, down to about half a mile to a mile, you have some diffuse light, but sea creatures often generate their own life. its called biolum -- for example when the submarines are slipping along, and they pick up their transmitted from a tower. when they do send stuff down there, they have to be mindful of these kind of density gradients in the water. >> thank you so much, i think we learned a lot right here. >> its interesting because the blue fin submersible, it doesnt nee...

Difference between the hot oil and the colder water is creating density gradients so these dispersants arent necessarily going to sink, theyre going to travel in the oil column. when i hear b.p. say low toxici toxicity, this is not what the data sheets are really showing, its not a very realistic picture. and what about the fish eggs that are in the water column now? for the crab eggs, for the oyster larvae. >> but this is a method thats getting endorsement by the epa? >> reporter: the epa only ...